30551130 has 48 divisors (see below), whose sum is σ = 82892160. Its totient is φ = 7792224.

The previous prime is 30551051. The next prime is 30551141. The reversal of 30551130 is 3115503.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 5310 + ... + 9449.

It is an arithmetic number, because the mean of its divisors is an integer number (1726920).

Almost surely, 2^30551130 is an apocalyptic number.

30551130 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

30551130 is an abundant number, since it is smaller than the sum of its proper divisors (52341030).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

30551130 is a wasteful number, since it uses less digits than its factorization.

30551130 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14795 (or 14792 counting only the distinct ones).

The product of its (nonzero) digits is 225, while the sum is 18.

The square root of 30551130 is about 5527.3076628681. The cubic root of 30551130 is about 312.6144817888.

Adding to 30551130 its reverse (3115503), we get a palindrome (33666633).

The spelling of 30551130 in words is "thirty million, five hundred fifty-one thousand, one hundred thirty".